Davis Corporation uses the weighted-average method in its process costing system. This month, the beginning inventory in the first processing department consisted of 400 units. The costs and percentage completion of these units in beginning inventory were: Cost Percent Complete Material costs 7,500 75% Conversion costs 4,999 45% A total of 5,400 units were started and 4,700 units were transferred to the second processing department during the month. The following costs were incurred in the first processing department during the month: Materials costs $112,900 Conversion costs $93,900 The ending inventory was 85% complete with respect to materials and 30% complete with respect to conversion costs. The cost per equivalent unit for materials for the month in the first processing department is closest to:__________.
a. $21.37
b. $19.47
c. $20.04
d. $20.76